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OBD Codes > Volkswagen > p0134

Volkswagen Information

DATSC provides free error code information for Volkswagen vehicles and is provided free of charge.

Facts
Country & Continent of Origin: Germany (Europe)

O2 Sensor Circuit No Activity Detected

PossibleSymptons

One or more of the following may occur: Check engine light illumination Poorly running/engine missing Blowing black smoke Poor fuel economy Dying, stuttering

PossibleCauses

A code P0134 may mean that one or more of the following has happened: Bad O2 (oxygen) sensor Bad heater circuit in the O2 sensor Wiring or connector to the sensor frayed / broken Blown heater circuit fuse Holes in the exhaust system PCM failure

PossibleCauses

The most common fix is to replace the oxygen sensor. But that doesn't rule out the possibility of: Rusted exhaust pipe Inspect wiring & connector(s) for problems Excessive amperage blowing heater fuse (still requires replacement of sensor but also re

SpecialNotes

This code refers to the front oxygen sensor on Bank 1. Basically the oxygen sensor is inactive. Here's why: The powertrain control module (PCM) provides a baseline voltage of about 450 mV on the oxygen sensor signal circuit. When cold, the PCM detects th

Oxygen (Lambda) Sensor Bank-1 Sensor-1, No Activity Detected